Adobe Photoshop CS3 - Manual (Page 250)

PHOTOSHOP CS3
User Guide
243
Change the vanishing point of a composition
The Vanishing Point tool selects the vanishing point image, which changes the perspective of the composition. By
default, the middle image contains the vanishing point (it has a blue border around it when selected). There can only
be one vanishing point.
1 Select Perspective in the Settings area of the Photomerge dialog box.
2 Select the Vanishing Point tool , and click an image in the work area to place the vanishing point there.
3 If necessary, use the Select Image tool to adjust the position of the remaining images. A red border indicates
that the selected image does not contain the vanishing point.
When you apply perspective correction to a composition, the images without the vanishing point are linked to the
image that contains the vanishing point. You can break this link by clicking the Reposition Only button, by
separating the images in the work area, or by dragging the image with the vanishing point back to the lightbox. When
the link is broken, images return to their original shapes.
The perspective correction works only up to a 120˚ angle of view, approximately. For a wider angle of view, deselect
the Perspective option.
To change the perspective of a composition, select the Vanishing Point tool, and click an image in the work area.
Notice how the perspective of the composition changes according to which image contains the vanishing point.